Perhaps you should try some spelling variations:
chau treo » cau treo, cau theo, chau tho
hieu van » hieu va, thien van, lieu va
hai chau » lai chau, ha chau, hat chau
tinh hai » tinh thai, tinh chat, trinh han
sach doi » sach hoi, sach moi, sach dao
nang mai » nang tai, lang mai, nang cai
xay tinh » may tinh, xa tinh, tay tinh
tuc xay » thuc xay, tuc xa, tu xay
cam tuc » cam xuc, cam tu, nam thuc
van cam » van nam, van lam, van cau
sach ly » sach y, sach lo, sach ty
nang ma » tang ma, sang ma, nang cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ly) or (sach doi)) ((nang mai) OR (nang ma)) hoi. hieu van cam tuc xay tinh hai chau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ly) OR (sach doi)) ((nang mai) OR (nang ma)) hoi. hieu van cam tuc xay tinh hai chau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ly) or (sach doi)) ((nang mai) OR (nang ma)) hoi. hieu van cam tuc xay tinh hai chau treo".
• Adding a wildcard symbol may retrieve word variants: su ((sach ly) or (sach doi)) ((nang mai) OR (nang ma)) hoi. hieu van cam tuc xay tinh hai chau treo*.